Some people have blog, website, they need to make some screenshots for articles as I did. For me, I use a small simple application to do this job. But if you want more functions you can download and install some good applications. If you do not like to use these kinds of applications, you can use a web tool that allows you to take shots on any web page without install any application.

Tweeshot is a web service that allows users to take screenshots on any web page. Just type a web page link in to address bar, click "SHOT!". It will take a shot in full-size of that page. It also allows you to crop photo, re-size, and download or share photo with other social networking sites, like Facebook, Twitter, Flickr, Picasa, or email. It is a very useful tool, easy to use. This is a free service without register now, it says it will develop premium with more features in the future, but you have to pay a small bill for it.